| 渤海湾现代沉积速率和沉积过程 |
| |
| 引用本文： | 杜瑞芝,刘国贤.渤海湾现代沉积速率和沉积过程[J].海洋地质与第四纪地质,1990,10(3):15-22. |
| |
| 作者姓名： | 杜瑞芝 刘国贤 |
| |
| 作者单位： | 国家海洋局海洋环境保护研究所 大连
(杜瑞芝，刘国贤，杨松林，周义华)，国家海洋局海洋环境保护研究所 大连(张兵) |
| |
| 摘 要： | 本文报道了笔者于渤海湾采集的9个柱样品,用~(210)Pb法测定的现代沉积速率;~(210)Pb剖面揭示出人类和自然原因所产生的沉积事件。并对该湾的沉积过程进行了探讨。 海河口844站~(210)Pb剖面反映出六十年代初,天津新港进行水下工程时出现瞬时堆积的记录;1041站记录了1964年一次雍潮出现的高速沉积带。从而,表明人类和自然对现代沉积作用的贡献,并且,指出这对海洋工程、沉积学及环境科学研究均十分重要。
|
| 关 键 词： | 渤海湾 海洋 沉积物 沉积 速率 |
MODERN SEDIMENTATION RATE AND SEDIMENTATION PROCESS IN BOHAI BAY |
| |
| Du Ruizhi,Liu Guoxian,Yang Songlin Zhou Yihua,Zhang Bing.MODERN SEDIMENTATION RATE AND SEDIMENTATION PROCESS IN BOHAI BAY[J].Marine Geology & Quaternary Geology,1990,10(3):15-22. |
| |
| Authors: | Du Ruizhi Liu Guoxian Yang Songlin Zhou Yihua Zhang Bing |
| |
| Abstract: | 210Pb dating has determined modern sedimentation rate for 9 cores from Bohai Bay. It is found that sedimentation rate is relatively high off the Haihe River mouth (generally over 15mm/yr, and even up to 40-50mm/yr near the bay apex), and gradually decreases in anchorage and outer sea area, usually less than 8mm/yr.
Radioactive profiles of the sediments have revealed important events in modern sedimentary environments, core column at site 1041 records the time of the Huanghe River flood and channel changes; and 210Pb profile from site 844 reflects the"instant accumulation"caused by human activities.
We think that studies of modern sedimentation rate can be able to unco ver both man-made and natural events and this is very significant to ocean development engineering and scientific researches of environment. |
| |
| Keywords: | Bohai Bay marine sediments sedimentation rate 210Pb |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
